Induction-coil.



BEST AVAILABLE COP" -PAIBNTED JUNE 23, 1908.

'1). .H. YOSTL INDUOTI ON GOILL .APPLIOAHOH FILED 6m. 23, 19071 v No. 891,320,

BEST AVAILABLE coPY UNITED STATES PATENT OFFICE.

Douala) H. YOST, or Y RK, PENNSYLVANIA, ASSIGNOR or ONE-HALF 'ro FREDERICK n. v. 4 ,YOS'I; OF YORK, PENNSYLVANIA.

INDUCTION-COIL.

To all whom it rnay concern;-

v Be it knownr'that 1,; D NALD H. Yosr, a citizen-of the United States, residing at York,

in the county of Yorlr, State of Pennsylvania, have invented certain new and useful lme' rovements in Induction-Coils; of which the ollo'wing is-a specification. My invention relates toan improvementininduction coils, and it has for its object to pro 'de animproved construction and -means of interrupting an electric current through the primary coil of an induction coil; I

and a further object consists in the provision of meansffor regulating the frequency-of such interruptions.

A convenient embodiment of my invention is illustrated in the accompanying drawing forming 'a part of my specification, but it is to be understood of construction may be made without departin from my invention. I

" In t edrawing f Figure -1 is a longitudinal central 'section'of embodying my invention; Figure 2 is'asection on the line 22 of Figure 1, a portion of the interrupting mechamsm being shown in'dotted lines; and

- Figure 31s a sectional-view of a portion of the device showing. a modified construction.

' Referring to the drawing,

1 designates a rimary coil of insulated wire, preferably copper, and .2 designates asecondary coil of insulated wire, also preferably of copper. The primary coil is wound about a bobbin or support 3 of suitable insulating matcriah T hisbobbin is hollow and projecting into the same is a metallic 'core5', preferably of soft iron, which is ad apted to be magnetized and demagnetizcd by the making and breaking of the electric circult through .the primary coil. This core may be a solid rod, as shown, or it may coni .sist of a bundle of soft wires held together by suitable means.

coil 1 will be described hereafter.

- The meansfor sup )orting and adjusting the core 5 longitudinally within the primary The coils and thecore are SUPPOTtMLUPUIl a suitable frame, the end portions 6 and-7 only of which are shown. -t is deemed unnecessary to my invention to show and describe the side portions of the frame.

The devices for making and breaking the electric circuit are supported in a cup-shaped I Specification'of Letters Patent. Applicafion filed October 23, 1907. Seria1 No. 398,785.

that changes in the details Patented .Tune 28, 1908 deyice 8 of porcelaincr other suitable insulating material, which is connected to the end '7 of the frame of the coil by means of metalto the end 7 of which project through holes in the bottom of-the cup-shaped insulatin device 8. The said device is held or secure upon the .iave screw-threaded engagement with the ends of the posts-10 and 11 which project beyond or below the bottom ofthe cup 8. i Y

and'21 designate metallic plates or sulating cup 8, by means of screws 22.

spring metal, 7 'post 10. 26 designates a similar plate which is connected to the plate or member 21 and which is in contact with the post 11. The

bchveen the plates or members 20 and 21 and extends upwardly between the plates or members as indicated in the draw- The armature 30 is adapted to move mgs. freely longitudinally of the pin or guide 36 and along rectilinear lines;

it will be observed that irimary coil of wire 1 is-conncctcd to a binding post 40, which in turn is connected by means of a wire 4110/0110 electrode of an electric battery (not shown); The other end of the primary coil of'wire is connected to the post 10 The post ll is connected by means of a wire -13 tu-ahinding post -16, which is com'mclsd by ncans of the wire -17 to the other electrode When thc 'arlnature 3U is inthc'position shown in Figure 1 of the drawings, it will be seen that-the circuit through the primary osts 10 andll by means of the nuts 16 which? members connected to the bottom of them designate a contact plate, pl eferabl f which is secured to the plate or member 20, and which is in contact with the" plates or members 20 and 21 are separatedsaid one end of the ol" the said electric batter he posts or rods 10 and 11, which are secured of the frame and the outer ends The armature '30 for the said electhe bottom of the insulating cup 8 at a point coil is complete and that a ,current may pass from the battery through the wire 41 ,mto,

the primary coil, thence-to the post 10, and

the plate 20, through the armature 30 to'the plate 21, and thence through the post 11 and the wire 45 to the-wire 47 connected to the opposite electrode of .the' battery;

he passage of the current magnetiz es the iron. core 5, and movement of the armature 30 longitudinally of the pin 36 is occasioned so that the circuit is interrupted or broken.

As soon'as the circuit is interrupted, the" armature 30 falls back into contact with the plates or disks .and 21, again 'completin the circuit. .The operation may be repeate Itwill be,understood that upon the mak ing and thebreaking of thecircuit. through,

connected the primarycoil, an induced current is pro-.

duced'in the secondary coil 2; The opposite ends of this coil are-connected respectively" tobindin posts 50 and 51, which are in turn to 52 and 53, which m y be extended to an point for the purpose 0 pro ducing a. s ar 'or for any other purpose which may e desired.-

It is desirable toprovidemeans ina device 'ofthis character. by the use of which the. frequency ofthe interruptions of the current -may 'be varied; To accomplish this purpose, I have conceived a construction in which the core of the electro-magnet is longitudinally adjustable so that it umay move toward and from the armature :30 which operates to complete and breakthe circuit to interrupt the current of electricity;

It e notedtthat therod 36lprojects I into a perforation55 in one end of the core 5, f l and that it serves as a guide to hold the core in proper position relatively to the said interrupter or disk 30. The means for occasionmg or effecting the longitudinal adjustinent of the core 55 consists of a member 60 pend? measured by noting the space through which frame.

" jects through the sai videdwitha'screw-threaded section 62,w 'ch is in engagement with the screw threads of secured to the end-6 of the induction coil The member is provided'with ,a

screw-threaded open" 61. The core 5 pro opening and is ro' the opening 61. The member 60 is provided with a circular flange 63, which is rovided with teeth or indentations upon its edge which are adapted to be engaged by tee'tlffi fi upon a plate 65. This plate is rovided with a central, angular opening 66 t ough which the end of the core 5 projects; I The end portion: of the-core 5 is also angular, so that b turning the plate 65, the core is also turne and by reason of-its screw-threaded engagement with the stationaryplate 60, longitudinal movement thereof is occasioned.

The extent of longitudinal movement -de-' ugn the extent of its revolution, and the qiit tofthe latter movement may be I one end of the said spring resting-aga' BEST AVAILABLE cop -5' the plate is moved} Iithere are twentyfive, teeth upon "the ;-plate 65, and a 'corresponding number of indentations inthe upper edge of thefiangefig, itwill be understood. ate is moved through-the space.

that if the of one tooth, the cores will be turned'one' twenty-fifth (1/25) of a revolutionfind will be moved longitudinally throughga distance e ual. to one-twentyfifth 1/ 25).o f the pitchx; 1 a

o the screw threa I The plate 65 is held so that. '-the'-'teeth thereon are-in engagement withtheindent ie ltions' '01- teeth u on the flange of the member 10,- '-which; is

60; by means 0 a *wiregspring coilediabout theprojec'ting en of the, core. 5,

plate 65, and the other"end'resting agairist jectin endof thesaidcore 5.

Int e construction as describedfth e 3O rests upon the plates 20 and 21,'by'reasonof gravity, and it isnecessa therefore, that Y in usethe'induction coil be eld in'a-vertical or substantially vertical position;

In Figure 3, 1 have shown a slightly mom fied construction in which awire. spring 75 is coiled around the pin 36 and is located be- .tween the armature 30 and the adjacent end of the core-5 and acts t'o-hold the said armaturea ainst themetallic members 20 and Z 1. If desired, this s ring may be used .atiall which the action of gravity won 1 an electro-magnet and the armature for the electro-magnet'located between the said m net and the said circuit and in contact wit the disconnected portions'of thecircuit to complete the latter, and the sa'itha'rmature being adapted to oscillate between the said electro-ma et and the said circuit;

' 2. Inza evice of the characterdescribed,

tthe

the lower or. inner-side of a' nut -71 on theproftimes, but it is o necessaryto use it when the coil is'lgcatedm a horizontal osition in n9tLocca-..

'sio'n the movementof the armature 30-upon the combinationof an 'electro-magnet, an

electric circuit havinglian interruption there in, the armature for e salidelectro-magnet, the said armature bein adapted torest by ravity upon ortions' o the said circuit and rid e the sai interru tion-and also to'oscillate. etween-the 'sai circuit and the said electro-m 3. In a vice 0mm character described,

the combination of an electm magnet, an

BEST vAiLAsLecoP the combination of an electro-magnet,' an

electric circuit, the armature of the said elec tro-magnet, the said armature being inter- A 'p'osedbetween the said electro-1nagnet and the said circuit, and means for retaining the said armature in alinement with the said electro-ma 'net.

5. In a device of the character described, the combination of an electro-inagnet, an electric circuit having an interruption therein, the armature of the said electro-rnagnet, the said armature being ada ted to rest upon the said circuit and bridge tile said interruption, and the said armature having a perforation therethrough, and a suitably supported guide extending through the said perforation to hold and guide the said conductor.

6. In a device of the character described, the combination of an electro-magnet having a movable core, means for occasioning movement of the said core, an electric circuit, and a movable member adapted to oscillate between the said electro magnet and a portion of the said circuit, the frequency of oscillation of the said member being controlled by varying the distance between the core of the said electro-magnet and the said circuit.

7. In a device of the character described, the combination of an electro-magnet having a movable core, means for occasioning movement of the said core, an electric circuit, and

the armature of the said magnet, the said armature being adapted to oscillate between the said core and a 8. In a device 0 the character described, the combination of the core of an electro magnet the said core having a perforation in one end thereof, means for occasioning longitudinal movement of the said core, and means extending into the said perforation to guide the said magnet t5 the position desired.

9. In a device of. the character described, the combination of the core of an induction .coil, thesaid core havinga erfo'ration at one upon the said pin and adapted to oscillate beortion of the said circuit.

tween the said electro-magnet and the said circuit.

10. An induction coil having a longitudin'ally movable core, means for occasioning movement of the said core, the said means comprising a staionary member with which the said core has screw-threaded engagement, and means for occasioning rotation of the said core, whereby longitudinal movement thereof is effected.

1]. An induction coil having a longitudinally movable core, the said core having a proiecting end portion the cross-sectional out me of WlllCll is angular, and means for occasioning movement of the said core, the

said means coi'nprising a stationary member with which the said core has screw-threaded connection, and the said member having a series of indentations, a movable member having a series of teeth in engagement with the said indentations, the said movable member having an angular opening through which the projecting end portion of the core extends, the sides of the said projecting an gular portion being in contact with the sides of the said opening, whereby the turning of the said movable member occasions a turning movement of the said core.

12. In a device of the character described, the con'ibination of an clectro-magnet, an electric circuit having relatively stationarily supported disconnected portions, the arina ture of the said magnet'iocated between the latter and the disconnected portions of the said circuit, and adapted to oscillate between the said circuit and the said magnet, and means for occasioning a change in the frequency of the said oscillations.

13. In a device of the character described,

the combination of an electro-magnet, ,an.

electric circuit having disconnected portions whereby the said circuit is interrupted, the armature of the said electro-niagnet adapted to contact with. the said disconnected portions to bridge the said interruption, the said armature being adapted to oscillate between the saidcircuit and the said clectro-magnet, and means for occasioning a movement of a portion of the said electro-niagnet toward and from the said circuit, whereb the frequency of the said oscillations ma e varied.

In testimony that I claim the oregoing as my invention, I have hereunto signed my .name thisf19th day of October, A. D. 1907.

"DONALD H. Yos'r,

In the presence of? JOHH H. HARTMAN, Jason E. WEAVER. 

